Did the weekly w/c Saturday and got to inspect the O closely.
There are a couple marks on his back where some scales got knocked loose, not terrible looking.
More concerning is that one of his gills is not as active as the other, I'm hoping it may just be some bruising.
I can see inside and there's no apparent damage.
It just seems the one side doesn't open as much as the other.
Both side do open and function, and the fish doesn't seem to be experiencing discomfort.
The O is still swimming around normally.

Glad to hear all is well! I've lost a few smaller fish due to this. Funny thing is, all my tanks are have lids or covers with only tiny gaps for tubing and cords. Most recent was my kissing gourami. My kids found him quite a ways from the tank on the carpet, not looking too good. They got him back into the tank and he hid in the plants for a week or two. That was a few months ago. All good like nothing happened.

75g a tiger oscar and a green severum
55g community tank with plants
55g goldfish tank
29g community tank with plants